Definition of deontology in English:

noun

While both deontologists and rule - utilitarians are rule-followers, deontology explicitly stresses duty and intention rather than outcome, whereas the ultimate focus of rule-utilitarianism is on consequences.

Another problem for virtue ethics, which is shared by both utilitarianism and deontology, is ‘the justification problem.’

There are two main categories of deontological theories in the literature: rule deontology and act deontology.